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The fuse rating is expressed in terms of

voltage
current
VAR
kVA

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Admittance relay is

impedance relay
non-directional relay
None of these
directional relay

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The making capacity of a circuit breaker is equal to

None of these
2.55 × symmetrical breaking capacity
√3 × symmetrical breaking capacity
√2 × symmetrical breaking capacity

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A differential relay measures the vector difference between

two or more similar electrical quantities
two voltages
two currents
None of these

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A fuse in a motor circuit provides protection against

None of these
short-circuit and overload
open circuit, short-circuit and overload
overload

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Interruption of large currents by relay requires

arc suppressing blow out coils
wide separation of the opened contacts
all of these
high speed opening of contacts

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